NUCLEON EXCHANGE IN THE SCATTERING OF NUCLEI ON NUCLEI H. G. BOHLEN, B. GEBAUER, N. MARQUARDT, W. von OERTZEN, E. E. HABIB and B. KOHLMEYER J. Phys. Colloques, 32 C6 (1971) C6-141-C6-143 DOI: 10.1051/jphyscol:1971622